On Monday, Tuesday, and Wednesday, Stephen practiced the piano from 4:15 P. M. until 5:45 P. M. In total, how long did he practice during those three days?On Monday, David woke up at 7:25 A. M. and went to sleep at 8:30 P. M. How long was David awake?

Question 1: 1hr 30m

Question 2: 13hr 5m

Step-by-step explanation:

(✿◡‿◡) hope this helps! :3

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

answer: i guess 105 degrees?

step-by-step explanation: